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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 336 days






2. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






4. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






5. 1. brain function - 2. blood flow - 3. willing female






6. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






7. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






8. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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9. When are dairy cattle dehorned?






10. ~60 days before calving






11. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






12. Parturition is controlled by...






13. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






14. Scar tissue plugs up chambers of udder






15. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






16. Superior genes are _______ to multiply






17. Animals which have only one estrous cycle (ex: dog - fox)






18. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






19. Allows extension of penis without fibro-elastic penis






20. 26 hours after estrus begins






21. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






22. What makes the milk flow through the mammary glands?






23. Animal which has been castrated after puberty






24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






25. When are steers and heifers weaned from bottle feeding?






26. 2 month growth cycle. stored in the epididymis of the bull






27. Provide nourishment for the developing sperm






28. Duct through penis that carries sperm and urine






29. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






30. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






31. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






32. 1. brain function - 2. blood flow - 3. willing female






33. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






34. 1-3 days






35. Look for infection - split - and rupture of the penis






36. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






37. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






38. What makes the milk flow through the mammary glands?






39. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






40. Implies the amount of estrogen production






41. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






42. 30 hours after estrus begins






43. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






44. Check feet and legs - look for masculine traits in build such as crest and muscling






45. Not under a timeline - cow can not be sold as steak






46. 336 days






47. 24 hours before end of estrus cycle






48. 45-60 days after breeding; re-breed as required






49. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






50. Failure to have one testis (gonad) to descend